Pneumatic infrared ray detector for use in gas analyzer

Details Pneumatic infrared ray detector for use in gas analyzer Pneumatic infrared ray detector for use in gas analyzer

1993-09-24

1994-11-08

Dzierzynski, Paul M.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250343, G01N 2161

Patent

active

053629671

ABSTRACT:
A pneumatic infrared ray detector for use in a gas analyzer provided with a gas-slowly leaking mechanism capable of not only controlling a quantity of gas leaked in high accuracy but also increasing a range capable of controlling said quantity of gas leaked is provided. A body is provided with gas chambers and a detecting gas chamber and the respective gas chambers are communicated with said detecting gas chamber through gas passages. A ring-shaped leak-controlling sheet on the bottom surface of the detecting gas chamber is provided with a groove-like gas-leaking passage between the inner and outer circumferential edges thereof and a ring-shaped diaphragm and a vibrating diaphragm are built up on said leak-controlling sheet to be fixedly pressurized by means of a cover plate through a pressurizing member and a plate spring.

REFERENCES:
patent: 3968369 (1976-07-01), Luft
patent: 4201915 (1980-05-01), Schunk et al.
patent: 4306150 (1981-12-01), Dietz
patent: 4742229 (1988-05-01), Weinel

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